1) 5/8х - 1/4х + 1/12у + 1/3у = (5/8 - 1/4)х + (1/12 + 1/3)у = (5/8 - 2/8)х + (1/12 + 4/12)у = 3/8х + 5/12у
2) 9.4х + 2х - 11 3/4у - 3 5/9у = 11.4х - 11 33/36у - 3 5/9у = 11.4х - 12у
3) 2 1/6х - 7х + 1 3/4у + 2 1/4у = (2 + 1/6 - 7)х + (1 3/4 + 2 1/4)у = (12/6 + 1/6 - 7)х + (7/4 + 9/4)у = 6/6х - 7х + 16/4у = -х + 4у
4) 3.5х + 6 1/4х - 7у + 9у = 9.5х - 7у + 9у = 9.5х + 2у
1) 5/8х - 1/4х + 1/12у + 1/3у = (5/8 - 1/4)х + (1/12 + 1/3)у = (5/8 - 2/8)х + (1/12 + 4/12)у = 3/8х + 5/12у
2) 9.4х + 2х - 11 3/4у - 3 5/9у = 11.4х - 11 33/36у - 3 5/9у = 11.4х - 12у
3) 2 1/6х - 7х + 1 3/4у + 2 1/4у = (2 + 1/6 - 7)х + (1 3/4 + 2 1/4)у = (12/6 + 1/6 - 7)х + (7/4 + 9/4)у = 6/6х - 7х + 16/4у = -х + 4у
4) 3.5х + 6 1/4х - 7у + 9у = 9.5х - 7у + 9у = 9.5х + 2у